Author: Amaury Forgeot d'Arc <amaur...@gmail.com>
Branch:
Changeset: r47645:dbe24f2e28bc
Date: 2011-09-27 23:24 +0200
http://bitbucket.org/pypy/pypy/changeset/dbe24f2e28bc/
Log: Implement _multiprocessing.SemLock._after_fork(). will it finally
prevent test_multiprocessing from blocking?
diff --git a/pypy/module/_multiprocessing/interp_semaphore.py
b/pypy/module/_multiprocessing/interp_semaphore.py
--- a/pypy/module/_multiprocessing/interp_semaphore.py
+++ b/pypy/module/_multiprocessing/interp_semaphore.py
@@ -468,6 +468,9 @@
self.count -= 1
+ def after_fork(self):
+ self.count = 0
+
@unwrap_spec(kind=int, maxvalue=int)
def rebuild(space, w_cls, w_handle, kind, maxvalue):
self = space.allocate_instance(W_SemLock, w_cls)
@@ -512,6 +515,7 @@
acquire = interp2app(W_SemLock.acquire),
release = interp2app(W_SemLock.release),
_rebuild = interp2app(W_SemLock.rebuild.im_func, as_classmethod=True),
+ _after_fork = interp2app(W_SemLock.after_fork),
__enter__=interp2app(W_SemLock.enter),
__exit__=interp2app(W_SemLock.exit),
SEM_VALUE_MAX=SEM_VALUE_MAX,
diff --git a/pypy/module/_multiprocessing/test/test_semaphore.py
b/pypy/module/_multiprocessing/test/test_semaphore.py
--- a/pypy/module/_multiprocessing/test/test_semaphore.py
+++ b/pypy/module/_multiprocessing/test/test_semaphore.py
@@ -39,6 +39,10 @@
sem.release()
assert sem._count() == 0
+ sem.acquire()
+ sem._after_fork()
+ assert sem._count() == 0
+
def test_recursive(self):
from _multiprocessing import SemLock
kind = self.RECURSIVE
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